Gewei's Consumer Cellphone Signal Booster is a small size, easy-to-use signal repeater that boosts network signals for cellular devices wherever you need. It significantly improves the communication quality of your devices at the minimum cost, prolongs their battery life and, moreover, helps you to build a healthier environment by reducing undesirable radiation exposure on your premise since your devices no longer need to search for signals all the time. This booster can cover an area of approximately 800 sq. meters.